baber/WOPTO huggingface dataset:
Patent GB-1154860-A (GB)
Title: Process for Preparing Hard Waxes
IPC: C08F20/18
Filed: 1966-08-30
Abstract: 1,154,860. Acrylic esters. FARBWERKE HOECHST A.G. 30 Aug., 1966 [28 Aug., 1965], No. 38568/66. Heading C2C. [Also in Division C3] Acrylic esters of an alcohol (1-4C), e.g. methyl acrylate are alcoholysed with aliphatic alcohol (16-30C) in the presence of sulphurous, hydrosulphurous, hypophosphorous acids or the sodium salt of hydroxymethane sulphonic acid and an inorganic polymerization inhibitor. The products are polymerized to form hard waxes. Cetyl, stearyl, behenyl alcohols or mixtures thereof, or an alcohol obtained by the saponification of the product of the reaction of aluminium triethyl with ethylene are specified and the inhibitor may be cuprous chloride or acetate. The reaction may be in excess alkyl acrylate or in a hydrocarbon or chlorinated hydrocarbon.
Patent GB-1155020-A (GB)
Title: Azido-Thiazolidine Compounds and process for their manufacture
Inventor: WOODWARD ROBERT BURNS
IPC: C07D513/04
Filed: 1966-08-30
Abstract: 1,155,020. Azido-thiazolidine derivatives and process for their preparation. R. B. WOODWARD. 30 Aug., 1966 [10 Sept., 1965; 9 Dec., 1965 (2); 3 Feb., 1966], No. 38573/66. Heading C2C. Compounds of the formula wherein Ac represents an acyl group, X represents the disubstituted carbon atom of the thiazolidine ring and R 1  stands for a free or functionally converted carboxyl group, may be obtained by reacting a 2,2-disubstituted 3-acyl- 5#-Y-thiazolidine-4-carboxylic acid derivative of the formula wherein Y represents a reactive esterified hydroxyl group, with a salt of hydrazoic acid. The reaction between the starting material and the hydrazoic acid salt, which may be a metal azide, e.g. an alkali metal azide, an ammonium azide or a quaternary ammonium azide, is preferably effected in a diluent, e.g. a polar, anhydrous or aqueous solvent, with cooling or heating and/or in an inert gas atmosphere. A resulting mixture of isomers may be resolved by conventional methods, e.g. fractional crystallization or distillation, adsorption chromatography; resulting racemates may be resolved by forming a mixture of diastereoisomeric salts with optically active salt-forming agents, separating the mixture into the diastereoisomeric salts and converting the isolated salts into the free compounds. The reactive esterified hydroxyl group Y in the starting material may be a hydroxyl group esterified with an inorganic acid, e.g. a hydrohalic acid or sulphuric acid, or an organic acid, e.g. a carboxylic acid or a sulphonic acid. In specific examples, the only examples of the radicals Ac and X which are described are the t-butyloxycarbonyl radical and a dimethyl-substituted carbon atom respectively. The products of the invention may be chemically modified by conventional methods, for example an ester group R 1  may be converted to the free acid or a free acid group R 1  may be converted to a functional derivative, many of which are described, e.g. ester, amide, azide, hydrazide, nitrile, azocarbonyl or azidocarbonyl.
Patent GB-1074239-A (GB)
Title: Self sharpening saw chains
IPC: B27B33/14
Filed: 1964-09-22
Abstract: 1,074,239. Sawing. OMARK INDUSTRIES Inc. Sept. 22, 1964 [Sept. 23, 1963], No. 38626/64. Heading B5L. A cutter link for a chain saw comprises a link body 38 having a cutting element 42 projecting outwardly from the body and including a shank 48 which has a portion offset laterally with respect to the body and a top plate 50 forming a continuation of the shank and bent laterally over the body to terminate on the opposite side of the body, the top plate extending longitudinally of the link, being inclined forwardly and outwardly from the rearward end to the forward end of the top plate, and having an outer surface 59 at the forward end extending rearwardly and inwardly from the forward face 58 to the rearward face 56 to provide a kerf bottom cutting edge (60, Fig. 2) at the intersection of the outer surface and forward face, and a forwardly directed kerf side cutting edge 68 on the forward portion of the shank intersecting the kerf bottom cutting edge 60. Left and right hand cutting links 16, 17 may be incorporated in a chain saw having side links 18 and centre drive links 12, the centre links may have protrusions 14 for sliding in the groove in a cutter bar 32 of a machine and for engagement by a sprocket 28 and may be shorter than the side and cutter links to provide spaces for the teeth of the sprocket which thereby drive the chain on a line passing through the axes of the pivots 22 joining the links. The latter feature, together with interengaging gear teeth 24 on the ends of the side and cutter links, is stated to reduce unwanted movement of the cutter links as they pass over the sprocket and are sharpened by a grinding wheel 72. The shank 48 of the cutting element of the links is bent outwardly by about 5 degrees from the medial plane of the link and the top plate is bent so as to be at about 105 degrees to the medial plane and 40 degrees to a line joining the pivots of the link. The front edge of the shank 48 is chamfered at 62 to produce the kerf side cutting edge 68, and thet op plate is formed with the outer surface 59 to produce the kerf bottom cutting edge (60, Fig. 2) which is inclined to the direction of travel of the chain; the cutting edges intersect at a point 20. Each cutter link is also formed with a depth gauge element 40 having an outer surface 46 on the same arc as the outer surface 59, the rearmost end 47 of the depth gauge being a greater distance forwardly of the midpoint of the line joining the pivot than the point 70 is rearwardly of the midpoint.
Patent GB-344562-A (GB)
Title: Improvements in and relating to bitumen and tar emulsions
IPC: C08L95/00
Filed: 1929-12-18
Abstract: A composition, which may be readily mixed with a substantially equal quantity of water to form bitumen or tar emulsions, comprises bituminous materials or tar, a higher fatty or resin acid or a mixture thereof, an alkali silicate, and a proportion of water substantially less than 9 per cent, the proportion of silicate being such that, after saponification of the fatty or resin acid, the molecular proportions of alkali and silica remaining in the composition are 1 : 3-5.  The acid employed is preferably "liquid rosin," derived from sulphite cellulose lye the proportion being of the order of 2 per cent of the bituminous material.  The silicate used may be commercial water-glass, the molecular proportions of sodium oxide and silica in which are 1 : 2.  In addition sodium silicate (Na2O:SiO2 1 : 4) and caustic alkalies or ammonia may be used.  Sodium silicate may be replaced by potassium silicate. Numerous examples are given in the Specifications.
Patent GB-1013943-A (GB)
Title: Improvements relating to forming mandrels
IPC: C08B3/20
Filed: 1962-10-13
Abstract: 1,013,943. Mandrels for shaping plastic sheets. W. H. FOSTER & SONS Ltd., and D. FORSTER. Oct. 1, 1963 [Oct. 13, 1962], No. 38825/62. Heading B5A. [Also in Division H5] A forming mandrel for use in the apparatus described in Specification 1,013,942 is heated by a copper sheathed mineral insulated electric resistance cable 9.
Patent GB-1087351-A (GB)
Title: Corrosion inhibitors
IPC: C07D235/30
Filed: 1964-09-24
Abstract: A corrosion inhibitor for use in the cooling system of an internal combustion engine comprises, by weight, from 1 to 5 parts of at least one alkali metal or alkaline earth metal borate, between 0.01 and 2 parts of at least one alkali metal or alkaline earth metal nitrite, between 0.01 and 2 parts of at least one "benzotriazole compound" of formula <FORM:1087351/C4-C5/1> wherein X is nitrogen, methylidyne, aminomethylidyne, benzylidyne or guanidinomethylidyne, and R is hydrogen or alkyl, or an alkali metal when X is nitrogen, and between 0.1 and 10 parts oil inhibitor comprising a major amount of non-polar oil and a non-preferentially watersoluble polar oil in an amount sufficient to cause the mineral oil to cling to metal surfaces in the cooling system.  By "non-preferentially water-soluble polar oil" is meant those oils which when mixed with equal amounts of a nonpolar oil and water are not so polar as to dissolve completely in the water; this oil may be a sulphonated petroleum or sulphonated alkylbenzene or alkyl naphthalene.  The "benzotriazole compound" may be benzotriazole, sodium benzotriazole, methyl benzotriazole, benzimidazole, guanidino-benzimidazole, or 2-phenyl benzimidazole.
Patent GB-1048179-A (GB)
Title: Electric hand drill
Inventor: NAKAGAM SHINICHI
IPC: B25D16/00
Filed: 1965-09-14
Abstract: 1,048,179. Portable drills. SHINKO ELECTRIC CO. Ltd. Sept. 14, 1965, No. 39286/65. Heading B3C. [Also in Divisions B4 and H2] A rotary-percussive drill comprises an electric rotary motor 3, 5 arranged to drive a shaft 2 and an electromagnet 15 having an armature 16 supported by an elastomer body 17 to allow vibration and having an impact part adapted to infringe upon the shaft when the electromagnet is excited. The electromagnet comprises a yoke 13 carrying a core 14 on which a coil 15 is wound and the armature is provided with an impact pole 20 adapted to strike the end of the shaft; a resilient portion may be secured to the end of the impact pole. In a modification, Fig. 3 (not shown), the armature 16 is connected by a disc 17<SP>1</SP> of elastomericmaterial to the casing of the drill.
Patent GB-1399267-A (GB)
Title: Floating roof tanks
IPC: B65D88/38
Filed: 1972-08-23
Abstract: 1399267 Tanks with floating roofs WHESSOE LTD 7 Aug 1973 [23 Aug 1972] 39345/72 Heading E1T A floating roof tank 1 comprises a primary pipe 4 and a secondary pipe 5 coupled together by a swivel joint 6, the other end of the primary pipe being coupled through an anchoring swivel joint 8 adjacent the base of the tank to an outlet 9 and the secondary pipe 5 being coupled at its other end through a swivel joint 10 to a flexible connection (12) coupled to a roof sump (3), the primary pipe being rotatable about its axis once the secondary pipe supported by a carrier 11 on the roof movable relative to a stop (20) from which it is spaced when the roof is lowered and towards which it travels as the roof rises, the stop being positioned so that as the roof rises the secondary pipe moves through a given angle relative to the primary pipe before the corner abuts the stop whereupon further lifting of the roof will raise the primary pipe. The trolley moves along a track secured to the roof and in the lowest position of the roof the secondardy pipe lies above or to the side of the primary pipe and parallel thereto.
Patent GB-1269369-A (GB)
Title: Light, weedless fly fishing lure
Inventor: POBST JOHN RICHARD
IPC: A01K85/08
Filed: 1969-08-06
Abstract: 1,269,369. Fly fishing lure. J. R. POBST. 6 Aug., 1969 [4 Sept., 1968], No. 39374/69. Heading A1A. A fly fishing lure comprises a hook 10 having a shank 12 with an eye 20 at one end, a sharp point 16 at the other end, an elongated straight portion 22 adjacent the eye, a straight portion 34 depending from 22 at an obtuse angle, a straight keel portion 38 parallel to portion 22 and a hook portion 14 and buoyant or fly lure material, e.g. resilient filaments, simulated fly thorax attached to portion 22 which covers and conceals sharp point 16. This point 16 extends directly towards and is in substantial alignment with portion 22. The centre of gravity of the lure lies below the line extending from eye 20 to the centre 42 of the bight of hooked portion 14 so the hook, when at rest will float and orientate itself in the water with point 16 uppermost.
Patent GB-1007690-A (GB)
Title: Process for preparing ª‰,ª‰'-dicyano-diethyl-ether
Filed: 1963-10-08
Abstract: b ,b 1 - dicyano - diethyl - ether is prepared by reacting acrylonitrile with water at a temperature of 40 DEG  to 70 DEG  C. in the presence of an alkaline catalyst, the amount of water being 100 to 400% in excess of the stoichiometric amount, acidifying the reaction mixture and separating unreacted starting materials and inorganic salts, separating the reaction mixture into three fractions by fractional distillation, the first fraction boiling below 150 DEG C., the second fraction boiling at 150 DEG  to 165 DEG  C., and the third fraction boiling above 165 DEG  C., if distilled under a vacuum of 5 mm. Hg., and purifying the second fraction by extraction with water and drying, if desired.  In a preferred embodiment, practically the whole of the third fraction and at least a part of the first fraction are returned to the reaction of acrylonitrile with water. When the process is performed continuously, the middle fraction may be dissolved in an organic solvent, which is practically insoluble in water, has a specific gravity higher than that of water, is miscible with the product ether and has a boiling point below that of said ether, prior to extraction with water and the ether recovered from the organic phase by, for example, distillation.  The aqueous solution from the extraction step may be recycled to the fractionating step.  Specified catalysts are the alkali metal and alkaline earth metal hydroxides and salts of weak acids.
Patent GB-921806-A (GB)
Title: Organometallic component for a catalytic system for the polymerisation of olefins
IPC: C07F5/00
Filed: 1961-11-06
Abstract: An organometallic component for a catalytic system for the polymerization of olefines comprises a dialkylberyllium compound, an organoaluminium compound an an ether in an amount chemically equivalent to the organoaluminium compound, i.e. 1 mol. of ether per mol. of organoaluminium compound.  The organometallic component may be made by alkylating a beryllium salt with an organoaluminium compound either in the presence of, or with the subsequent addition of, an ether.  This process may be a one-step process, for example triethylaluminium and beryllium dichloride may be reacted together, there being a 150% excess of the triethylaluminium <FORM:0921806/IV(a)/1> The diethylberyllium need not be separated, it being only necessary to add, at the end of the reaction, the chemically equivalent amount of ether with respect t the alkylaluminium compounds present.  In a two-step process, beryllium dichloride and triethylaluminium are reacted at a molar ratio of 1:1, <FORM:0921806/IV(a)/2> the diethylaluminium monochloride is distilled off and the residual beryllium salt is further alkylated with triethyl aluminium <FORM:0921806/IV(a)/3> In practice an excess of aluminium triethyl must be used.  All these reactions are preferably carried out in a concentrated medium and at a temperature of 20 DEG to 120 DEG C.  The alkylations may be carried out in the presence of solvents which are inert under the reaction conditions. Alternatively in the two-step process the ethylberyllium monochloride obtained is dehalogenated with an alkali metal hydride, <FORM:0921806/IV(a)/4> and the ethylberyllium hydride obtained is reacted with an olefine, e.g. C2H4, under a pressure of 1 to 20 atoms. and at reaction temperatures between 20 DEG  and 100 DEG C. to give diethylberyllium. The reaction is carried out in a solvent, e.g. ether or a dispersant, e.g. a saturated or an aromatic hydrocarbon.  A molecular complex of sodium hydride and triethyl aluminium may be used in place of sodium hydride. Olefines may be polymerized using the organo-metallic component of the invention together with a transition metal halide. Propylene and butene-1 are mentioned.  Specification 882,560 is referred to.
Patent GB-933450-A (GB)
Title: Electroplating bath
IPC: C23F13/02
Filed: 1960-11-18
Abstract: 933,450. Electroplating with platinum. ENGELHARD INDUSTRIES Inc. Nov. 18, 1960 [Nov. 23, 1959], No. 39736/60. Class 41. A platinum plating bath contains potassium hydroxy platinate (K 2 Pt(OH) 6 ) and an electrolyte to improve the conductivity, e.g. KOH or K 2 So 4 . The electrolyte is prepared by treating H 2 PtCl 6  with NaOH and then neutralizing with acetic to precipitate H 2 Pt(OH) 6  which is then converted to the potassium salt, and used at a minimum concentration of 4g. Pt per litre of electrolyte. The plating solution is tolerant of carbonate build up without precipitation. Surfaces of brass, silver, nickel, gold, titanium, copper, tungsten and rhodium may be plated after cleaning and etching.
Patent GB-1060148-A (GB)
Title: Dampening roller mechanism for offset printing presses
IPC: B41F7/26
Filed: 1964-09-30
Abstract: 1,060,148. Printing apparatus. ROBERTS & PORTER Inc. Sept. 30, 1964 [April 9, 1964], No. 39850/64. Heading B6C. In a lithographic rotary offset press the plate 14, Fig. 2, on the cylinder 10 is moistened by a dampening roller train 24, 26 and 22, the lastmentioned roller, which is of an elastomeric material, being driven through its shaft 28 such that it constitutes the drive to the plate cylinder 10 through frictionally engaged cylindrical surfaces 20, 44 and 18, 42, Fig. 3. The surfaces 20, 18, which, preferably, are smooth but may be knurled, form part of the cylinder 10 whilst the surfaces 44 and 42 are of a rubber harder than the material of the roller 22 and are keyed to metallic cores 40 mounted on the roller shaft 28. The ends of this shaft are mounted on slidable blocks 30, take-up screws 34 providing the necessary adjustment. Should the diameter of the surfaces 18 and 20 be less than that of the plate cylinder the diameter of the surfaces 42 and 44 are correspondingly increased over that of the dampening roller. If desired, the surfaces 44 and 42 may comprise part of the surface of the roller 22.
Patent GB-927563-A (GB)
Title: Improvements in or relating to drafting stands
Inventor: DARGUE ERIC LEWIN
IPC: A47B27/02
Filed: 1960-11-21
Abstract: 927,563. Tables. DARGUE BROS. Ltd. Nov. 21, 1961 [Nov. 21, 1960], No. 39884/60. Class 52 (3). A drafting table is mounted on a cantilevered arm which permits spring counterbalanced vertical and tilting motions of the drawing board and swivelling about a vertical axis. A vertical slide (Fig. 1, not shown) is positioned in slideways formed at the end of the arm by means of a bell-crank lever, having a tension spring counterbalancing the weight of the board on the shorter arm. The longer arm is formed as an operating handle and has a trigger controlling the entry of a spring detent into fixed rack teeth. A boss 30 is swivellably mounted on the cylindrical head 24 of the slide and can be clamped thereon by screw and nut 38. Boardcarrying brackets 84 are journalled on a shaft 82 which is supported in an extension 28 of boss 30. Tilt counterbalancing springs 94 are provided in annular channels 72 and compressed by pegs 92 against abutments 74, as the board is rotated from the vertical position. In the vertical position pegs 92 rest against rubber buffers 96. Clamping nut 102 is prevented from rotating, relatively to brackets 84, by screw 112 engaging teeth 110, thus, on rotation of shaft 82 by handle 108, fibre discs 86 are clamped between brackets 84 and extension 28 to secure the board. The cantilever arm is of cast aluminium or according to the Provisional Specification, of steel, and it may be fixed to the side of a cabinet or wall with or without the interposition of an angle iron frame.
Patent GB-1353975-A (GB)
Title: Method of making electrical contacts on the surface of a semi conductor device
IPC: H01L21/00
Filed: 1971-08-26
Abstract: 1353975 Sputter-etching and coating of semi-conductors RCA CORPORATION 26 Aug 1971 [2 Sept 1970] 40049/71 Heading C7F [Also in Division H1] Electrical contact is made to a semi-conductor body by disposing the body on a metal backing plate, sputter-etching so that an alloy of the semi-conductor and the metal forms on the body, and then depositing at least one layer of metal on the alloy. As described contacts are made to adjacent P and N regions of a silicon wafer exposed through holes in oxide passivation using a platinum backing plate on which several wafers are simultaneously processed. After evacuation the sputtering chamber is back-filled with argon and RF sputter etching effected in a 20-25 gauss magnetic field. In 10 minutes platinum back scatters to form a platinum-silicon alloy layer 50A thick. An RF source is then connected to a titanium sputtering source in the chamber and a 1000 layer of titanium deposited on the alloy. The wafers are moved to a location beneath a source of platinum to which an RF source is connected for 3 minutes to deposit 1500 of platinum. Finally gold layers are electroplated on and fashioned into beam leads for the device. In a modification the silicon wafer, of P type has at one face a high resistivity epitaxial P type layer penetrated by a diffused P+ zone, parts of this zone and the layer being exposed via holes in the oxide passivation. Alloy regions are formed in the holes as above and then aluminium evaporated on and shape etched to complete the contacts. In this case the alloy makes ohmic contact with the Pt zone but forms a Schottky barrier with the epitaxial layer.
Patent GB-1019731-A (GB)
Title: Improvements in or relating to filters
Inventor: FLOYD FREDERICK
IPC: B01D33/00
Filed: 1961-11-08
Abstract: 1,019,731. Travelling web filters. OZONAIR ENGINEERING CO. Ltd. Oct. 30, 1962 [Nov. 8, 1961], No. 40074/61. Heading BIT. A travelling web filter has at least two rollers 11, 12 providing an extended path within a casing 10 for the web 13 of filter material, each end of each roller having a resilient member, for example a skirt 16, arranged to bear outwardly against the casing 10 and against the adjacent resilient skirt 16 of the adjoining roller or an adjoining one of the rollers, whereby the adjacent edge of the web 13 is pinched between the skirts 16 to seal the edge. The skirt 16 is preferably formed of rubber, plastic, felt or bristle. In a second embodiment, Figs. 3 and 4 (not shown), the resilient member is in the form of a rubber ring of circular cross-section which is preferably not secured to the roller.
Patent GB-1270050-A (GB)
Title: Mould for compression moulding
Inventor: BODE GERHARD
IPC: B28B3/02
Filed: 1970-08-20
Abstract: 1,270,050. Wear-resistant mould walls. ATLAS-MAK MASCHINENBAU G.m.b.H. 20 Aug., 1970, No. 40141/70. Heading B5A. A compression-mould, e.g. for sand-lime mixes, has mould walls provided with areas of different wear resistance. Those areas thereof nearer to the pressing ram(s) which are subjected to higher frictional forces have the greater wear resistance. The differing areas may be different materials, or be hardened and tempered differently during manufacture, or may have coatings thereon, e.g. of oxide, hard chrome or ceramic. The mould walls may also be tapered and/or reversible.
Patent GB-1164580-A (GB)
Title: 2-Amino-Adenosine Derivatives
IPC: C07H19/16
Filed: 1968-08-22
Abstract: 1,164,580. 2-Aminoadenosine derivative*. BOEHRINGER MANNHEIM G.m.b.H. 22 Aug., 1968 [25 Aug., 1967], No. 40145/68. Heading C2C. Novel compounds (I) in which R is a saturated or unsaturated cycloalkyl radical which can also carry endo-alkylene radicals or fused, saturated or unsaturated cyclic aliphatic hydrocarbon radicals or is the group -A-X-B in which A is a saturated or unsaturated straight or branched chain or cyclic aliphatic hydrocarbon radical which may be substituted by OH, acyloxy, -COOH, or aryl, X is O, S, an alkylated or acylated imino group or a valency bond and B is alkyl, alkenyl, aryl, furyl, pyridyl, indolyl or imidazolyl which B radical can contain one or more halo, alkyl, haloalkyl, alkoxy, aryloxy, acyloxy, OH, mercapto, alkylmercapto, NO 2 , COOH, alkoxycarbonyl or methylsulphonylamino radicals with the proviso that -A-X-B is not C 1-6  alkyl or furfuryl are prepared by reacting the appropriate 6-halo or 6-reactive mercaptosubstituted purine with RNH 2 , or reductively decomposing a compound of the Formula II or the Formula III.